Gaya APA

Friedman, T, L. (2008). Hot, flat, and crowded: why the world needs a green revolution-and how we can renew our global future . : Penguin books.

Gaya MLA

Friedman, Thomas, L.. "Hot, flat, and crowded: why the world needs a green revolution-and how we can renew our global future". : Penguin books, 2008. Buku Cetak.